Alternanthera 'Purple Knight'
Alternanthera dentata 'Purple Knight'
Alternanthera 'Purple Knight' is an annual for edging, mid-border, suited to full sun and loam, flowering varies by climate.
| Type | Annual |
|---|---|
| Mature height | 45 cm |
| Spread | 45 cm |
| Aspect | full sun |
| Foliage | Deciduous |
| Hardiness | USDA 10a-11a |
| Pollinator-friendly | No |
| Pet-safe | Not confirmed |
Where to use it in a border
At around 45 cm, it sits best along the front edge, where a low, spreading habit reads best. Give it about 45 cm of room to spread, roughly 2 to the metre when planted in a drift. It is hardy across USDA zones 10a to 11a, so check it suits your area before planting.
It appears in our lists of full sun.
Border Builder uses Alternanthera 'Purple Knight''s height, spread, soil, bloom months and companions to place it in a full border plan for your own conditions, on iPhone and iPad.
Flowering through the year
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Good companions
Plants that share its conditions and style, chosen to complement its place in the border:
- Annual Vincato edge in front
- Chinese Holly 'Carissa'for height behind it
- Dusty Millerto edge in front
- False Holly 'Goshiki'for height behind it
- Japanese Holly 'Sky Pencil'for height behind it
- Pittosporum 'Wheeler's Dwarf'for height behind it